202421244440 has 16 divisors (see below), whose sum is σ = 455447800080. Its totient is φ = 80968497760.

The previous prime is 202421244413. The next prime is 202421244451. The reversal of 202421244440 is 44442124202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530265516 + ... + 2530265595.

It is an arithmetic number, because the mean of its divisors is an integer number (28465487505).

Almost surely, 2^202421244440 is an apocalyptic number.

202421244440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202421244440 is an abundant number, since it is smaller than the sum of its proper divisors (253026555640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202421244440 is a wasteful number, since it uses less digits than its factorization.

202421244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060531122 (or 5060531118 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 202421244440 its reverse (44442124202), we get a palindrome (246863368642).

The spelling of 202421244440 in words is "two hundred two billion, four hundred twenty-one million, two hundred forty-four thousand, four hundred forty".